Christmas Day 2020!
But why the NG instead of AD? It would seem to me that AD "Combat Arms" would be more loyal to Trump than many weekend warrior types that needed a job or career path. (That's not meant to be a dig on the NG only that units like the 82, 101 and Ranger Batts are standing by and prepared on moments notice.)
A precursor could be the rollout and deployment of the COVID vaccine with massive fenced areas used as assembly points for the "usual suspects" to be contained (detained.) You don't even have to coerce the logistical folks to take the lead they will be all too happy to move and set up the camps and facilities for distribution.